JPS58149391A - Production of metal vapor deposition fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION It is already known that fabrics with a metallic appearance can be obtained by vapor-depositing metals on the fabric surface.
In the case of porous fabrics such as porous nonwoven fabrics, evaporated metal vapor passes through the porous voids and adheres to the surface of transfer members such as transfer rolls and transfer belts, and as the vapor deposition process is continuously repeated, the metal vapor deposition surface increases. However, not only does this often cause stains due to metal particles adhering to the back side of the fabric, but also the texture of the fabric is distorted due to roughness on the transfer roll surface or belt surface, and the transfer speed fluctuates, resulting in an uneven deposited metal layer. There were some problems.

The present invention has succeeded in solving the above-mentioned drawbacks, stably maintaining the structure of porous fabrics such as coarse knitted fabrics, and improving the quality of single-sided metal-deposited fabrics.

Hereinafter, the manufacturing method of the present invention will be explained with reference to an example using a vacuum metal deposition processing apparatus shown in the drawings.

In the drawing, 1 is a vacuum metal deposition processing apparatus, 2 is a partition wall that divides the interior into an upper chamber B and a lower chamber A, and in the upper chamber B, 3 is an opening 4 provided at the center of the partition wall 2, the lower surface of which protrudes. 5 is an unwinding shaft, 6 is a winding shaft, and 7 is a sleeve fitted to the unwinding shaft 5, and the sleeve 7 is lined with a porous fabric to be treated. A sheet 20 to be processed consisting of the following is wound and held. 8 is a sleeve for winding up the metal-deposited processing sheet 21 fitted on the winding shaft 6, and 9.10 and 11.12 are the processing sheets 20. It is a guide roll for the processing sheet 21, and in the lower chamber A, there is a molten metal tank placed directly under the lower surface of the transfer roll 3 protruding and exposed from the opening 4 of the partition wall 2 and containing metal melted by electrical heating. 13 are provided.

The royal room is provided with an exhaust port 15 that communicates with a vacuum pump, and the upper chamber 8 is provided with an exhaust port 16 that also communicates with another vacuum pump.

The transfer port roll 39, unwinding shaft 59, and winding shaft 6 are rotated at a predetermined rotational speed by a rotational drive device installed outside one side wall of the vacuum metal deposition processing apparatus, and the transfer roll 3 is rotated from the unwinding side to the winding side. The backing sheet 0 and the metal-deposited processing sheet 21 are driven and rotated so as to be continuously transported at a predetermined speed under constant tension. Also, vacuum metal deposition processing equipment 1
The other side is provided with an opening/closing sealing lid, so that it is possible to insert the sleeve 7 in which the sheet to be processed 20 is rolled up or to take out the sleeve 6 in which the processed sheet 21 subjected to the metal vapor deposition treatment is rolled up. It is something.

The porous fabric C has a weave density of 1, in which air-permeable and light-transmitting voids are distributed and formed by nine weave stitches or perforations, and the through holes are large enough to allow metal vapor to pass through.

IIN distribution density, perforation density fabric 1 knitted fabric, non-woven fabric.

It is a plastic film, and the backing sheet F is a plastic sheet or paper that cannot be penetrated by metal vapor, and the adhesive used to temporarily attach these is a so-called pressure-sensitive adhesive or pressure-sensitive adhesive. When C and backing sheet F are laminated, they maintain a stable adhesion state, and the bales treated with metal vapor deposition have adhesive properties that allow both sheets to be easily peeled and separated.1 Usually, polyisobutylene, natural rubber, polyvinyl Known products containing butyral as the main ingredient, ester gum, coumaron resin as adhesion aid, phthalate ester, castor oil, etc. as plasticizers, or wax, etc. are used, but contain as little volatile components as possible. is desirable.

In this example, polyvinyl chloride multifilament yarn was used as the porous fabric, and the stitch void area was 30%.
Arrange the stitches of the coarse knitted fabric with a tender and make it 15tll.
A sheet to be treated is prepared by laminating and adhering it to a high-quality paper of 64Q/d on which a polyvinyl butyral adhesive coating layer of about 100 mm is coated. After sewing the guide cloth and installing it in the metal vapor deposition processing apparatus 11 in the state shown in the figure and closing the sealing lid, the exhaust port 15. When the vacuum level in the chamber A is set to 10'' to 10' torr and the vacuum level in the upper chamber B is set to about 10' torr using a vacuum pump through the exhaust port 16, the metal melting tank 13 is electrically heated to melt the aluminum. At the same time, the transfer roll 3 is rotated to transfer the sheet 2 to be processed.
When 0 is transferred at a predetermined speed, aluminum vapor evaporates toward the lower surface of the transfer roll 3 as shown by the dotted line.
A vapor deposited film is formed on one side of the porous fabric C and the lower surface of the backing sheet by passing through the pores thereof, and the fabric is continuously wound onto the winding shaft 6 side for processing.

The thickness of the vapor-deposited gold WA is usually adjusted to about 0.03 to 0.1 μm depending on the transport speed of the sheet 20 to be processed.

In the first stage of the treatment process, the porous fabric C to be treated is supported by the backing sheet F, and the structure is prevented from deforming even by a certain degree of tension fluctuation, and is transported at a predetermined speed to perform the uniform metal deposition treatment. At the same time, metal vapor deposition is prevented on the three surfaces of the transfer roll, and a stable transfer speed is maintained at all times, and the metal vapor deposition process is performed without causing the above-mentioned conventional drawbacks. After returning to normal pressure and opening the lid, the sleeve 6 on which the sheet 21 to be treated is wound is taken out, and the backing sheet F of the sheet to be treated is peeled off, thereby obtaining a porous fabric product with metal vapor deposition on one side.

In the present invention, since the porous fabric C is subjected to the processing process as the treated sheet 20 temporarily bonded and laminated with the backing sheet F, the porous fabric material is a material having poor adhesion to vapor-deposited metals such as nylon. In this case, an appropriate anchor coating treatment can be performed to effectively pre-treat only the surface to be metallized W, and for the purpose of preventing oxidation of the metallized surface of the metallized sheet 21, improving wear resistance, etc. Even when applying a clear top coat, the application can be applied almost exclusively to the metal-deposited surface, allowing pre-treatment and post-treatment to be carried out easily and effectively only on the necessary areas of the porous fabric that is temporarily bonded to the backing sheet. .

As explained above, according to the present invention, it is possible to stably and reliably perform metal vapor deposition treatment on a porous fabric without causing distortion to the fabric, and the industrial effects thereof are enormous.

Note that the metal-deposited porous fabric obtained by the present invention has fabric flexibility, breathability, and metallic luster, and is suitable for interior use.
This material is suitable for use in audio equipment, decorative displays, etc.

[Brief explanation of the drawing]

The drawing is a sectional view of an example of a vacuum metal deposition processing apparatus used to explain an embodiment of the method of the present invention. 1... Vacuum metal deposition processing device f2... Partition wall 3...
Transfer roll 4... Opening 5... Rewinding shaft 6...
- Winding shaft 7.8... Sleeve 13... Molten metal tank 15.16... Exhaust port 20... Sheet to be processed
21...Metal-deposited sheet A...Lower chamber B...Upper chamber C...Porous fabric F...Backing sheet

Claims (1)

[Claims] 1) After temporarily adhering a backing sheet such as paper or plastic film to the back side of a porous fabric such as a coarse knitted fabric or a porous nonwoven fabric, it is placed on the top of a molten metal tank in a vacuum metal deposition chamber. A method for manufacturing a metal-deposited fabric, characterized in that one side of the porous fabric is subjected to a metal-deposition treatment by bringing the backing sheet surface into contact with the surface of a positioned feed roll and transferring the porous fabric. 2) On the back side of a porous fabric such as a coarse knitted woven fabric or porous nonwoven fabric,
After temporarily adhering a backing sheet such as paper or plastic film, the surface of the porous fabric is coated with or without anchor coating, and the surface of the porous fabric is coated on the feed rail surface located at the top of the molten metal tank in the vacuum metal II chamber. A method for producing a metal-deposited cloth, which comprises transferring the backing sheet in contact to deposit the metal, and then applying a synthetic resin clear coat to the metal-deposited surface of the fabric as required, and then peeling off the backing sheet.